- HEP Roofing
- Energy-saving Metal Panels

Energy-saving Metal Panels
Energy-saving Metal Panels | Siding Solutions | Roofing | Cowan
Upgrade your Cowan property with HEP’s innovative metal panel roofing and siding solutions that keep energy bills low and curb appeal high. Our precision-engineered panels reflect solar heat, lock in comfort during Tennessee’s hot summers and chilly winters, and stand strong against wind, rain, and rust. Available in a spectrum of modern colors and profiles, they give homes, barns, and commercial buildings a clean, contemporary look without the high maintenance of traditional materials.
Backed by local crews who understand Cowan’s climate, HEP installs each system with meticulous attention to ventilation and insulation, maximizing your energy savings from day one. Enjoy industry-leading warranties, fast project turnarounds, and the peace of mind that comes from partnering with a company trusted across the Cumberland Plateau. Ready to protect your investment and the planet at the same time? Reach out today for a free, no-pressure estimate and discover how metal can make a major difference.
FAQs
Are metal roofing panels really more energy-efficient than traditional asphalt shingles in Cowan’s climate?
Yes. Cowan experiences warm, humid summers and mild winters, so solar heat gain is the biggest driver of energy costs. Our high-performance steel panels are manufactured with infrared-reflective pigments that bounce 25–40 % more sunlight back into the atmosphere than dark asphalt shingles. Because less heat is absorbed, attic temperatures can drop by as much as 30 °F, cutting summer air-conditioning consumption by 10–25 % according to Oak Ridge National Laboratory studies. In winter, the panels’ low thermal mass means they stop releasing heat almost as soon as the sun sets, reducing unwanted overnight heat loss. When paired with proper attic ventilation and insulation, metal roofing offers one of the best year-round energy returns available in Franklin County.
How do energy-saving metal siding panels help regulate indoor temperatures?
Unlike vinyl or wood, our insulated metal siding systems sandwich rigid foam insulation between a galvanized steel skin and a durable paint or PVDF coating. The foam core raises wall R-values by 2–6 points, creating a continuous thermal break that minimizes the studs’ “thermal bridge” effect. This slows conductive heat flow out of your conditioned space in winter and blocks external heat in summer. At the same time, the reflective exterior coating prevents UV degradation and repels up to 70 % of solar radiation. The result is steadier indoor temperatures, fewer HVAC run cycles, and significant savings on both heating and cooling bills.
What coatings or finishes are available to maximize the energy performance of your metal panels?
We offer several cool-roof certified finishes. The most popular is Kynar 500®/PVDF in light, high-reflectance colors (Solar Reflectance Index 70 or higher). These coatings maintain their reflectivity for decades and are backed by a 30-year fade-resistance warranty. For industrial or agricultural structures, we also supply silicone-modified polyester (SMP) coatings that balance energy performance with abrasion resistance. All finishes meet or exceed ENERGY STAR® and Cool Roof Rating Council (CRRC) guidelines, making them eligible for regional utility rebates when available.
Will installing a metal roof or siding increase the resale value of my Cowan property?
Multiple national studies place the average return on investment (ROI) for metal roofing at 85–95 %, higher than almost any other exterior improvement. Buyers recognize the long service life (40–70 years), lower insurance premiums due to Class A fire and Class 4 impact ratings, and the 10–25 % energy savings that come with reflective coatings and insulated panels. In a small market like Cowan, homes with durable, low-maintenance exteriors often sell faster as well because they stand out from asphalt or vinyl-clad competitors. Real estate agents report a premium of $1.00–$1.50 per square foot for metal-clad properties in Franklin County.
How long do energy-saving metal panels last, and what maintenance do they require?
Properly installed steel or aluminum panels typically last 50 years or more—two to three times the life of shingles or fiber cement siding. The factory-applied coatings are engineered to resist chalking, fading, and corrosion in Cowan’s humid environment. Routine maintenance is simple: inspect twice a year, clear leaves from valleys and gutters, and wash dirt or pollen off with a garden hose. Because panels lock together with concealed fasteners, there are no exposed nails to back out or gaps for water intrusion, further reducing upkeep costs.
Can metal panels be installed over my existing roof or siding without hurting energy performance?
Often yes. Our retrofit systems use a lightweight framing grid that allows the new metal panels to be installed directly over a single layer of existing shingles or lap siding (local codes permit one layer). An airspace is created between the old and new materials, forming a natural ventilated cavity that enhances the overall thermal performance by allowing heat to dissipate before it reaches the building envelope. The approach saves tear-off disposal fees, shortens installation time, and keeps hundreds of pounds of waste out of Franklin County landfills. A site visit is required to verify structural load capacity and moisture conditions before proceeding.